Enhanced styling in index.html

[mdshadibrar]

Description

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Related Issue

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• Resolves #[issue number]

Change Type

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• 🐛 Bug fix
• ✨ New feature
• 📚 Documentation update
• 🔧 Other (describe):

Checklist

• I’ve read and followed the contributing guidelines.
• Code adheres to project style and standards.
• Tests cover changes (if applicable).
• Documentation updated (if required).
• Ready for review.

Additional Notes

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[vercel]

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[github-actions]

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